[Lock Function & Erase Function] The Writing Board Builts with the Erase Button and Lock Function. You can Lock the Screen to Prevent Accidental Deletion. No More Worry about Losing Content while your are Writing or Drawing. Please Note that Turn Off the Lock Button when you need to Erase the Content. Farewell to Traditional Graffiti: Get rid of Ink / Dust / Pigment, No care, no pigment, environmental protection and sanitation. Avoid Chemical Pigment damage to the skin; Avoid Chalk Dust Injuring your Lungs; Avoid Furniture difficult to clean by graffiti. Large Size - 12 inch :This LCD Writing Tablet can be Scribbled Over and Over Again,Saving at least 1,000 pieces of Paper a Year.And the Drawing Board can be Erased with a Button,Lock all Screen with a Single Button, Never Worried about Losing the Page. [Eye Protection] The LCD Writing Tablet using Flexible Liquid Crystal Writing Technology. Without Radiation and Glare,Harmless to Children's Eyes. [Perfect Christmas gifts] Follow the Color Effect, Cultivate Children's IQ and EQ, Tap Painting Talent, and Improve baby's Aesthetic and Cognitive. Let the Baby Give Full Play to his Imagination and Enjoy the Fun of Creation.WARNING--CHOKING HAZARD -- Small parts. Not for children under 3 yrs.